Hydraulics and salinity profile of pitcher irrigation in saline water condition

Naik, B.S.; Panda, Ranajit; Nayak, S.C.; Sharma, Shankar

doi:10.1016/j.agwat.2008.04.010

Cited by 13 publications

(5 citation statements)

References 4 publications

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“…Emitter infiltration characteristics are affected by many factors, such as soil texture, bulk density, initial water content, emitter installation, buried depth, and emitter characteristics (structure size, design discharge, and working pressure head) [7]. The discharge of clay pots in soil is greatly affected by the pot porosity [8]. In practical applications, the pot porosity can be determined according to the water requirements for different crops [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Soil Texture on Water Movement of Porous Ceramic Emitters: A Simulation Study

Cai

Zhao

et al. 2018

Water

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Choosing reasonable design parameters for ceramic emitters used in subsurface irrigation is important for reducing the deep percolation of water and improving the water use efficiency. Laboratory experiments and numerical simulations with the HYDRUS-2D software were carried out to analyze the effect of soil texture on the infiltration characteristics of porous ceramic emitters used for subsurface irrigation. HYDRUS-2D predictions of emitter discharge in soil and wetting front are in agreement with experimental results, and the HYDRUS-2D model can be used to accurately simulate soil water movement during subsurface irrigation with ceramic emitters in different soil textures. Results show that soil texture has a significant effect on emitter discharge, soil matrix potential around the emitter, and wetting front. For 12 different soil textures, the aspect ratio of the wetting front is basically between 0.84–1.49. In sandy soil, the wetting front mainly appears as an ellipse; but in the clay, the wetting front is closer to a circle. As irrigation time increases, emitter discharge gradually decreases to a stable value; however, emitter discharge in different texture soils is quite different. In order to improve the crop water use efficiency in sandy soil, soil water retention can be improved by adding a clay interlayer or adding water retention agent, reducing the risk of deep percolation and improving the water use efficiency.

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Section: Introductionmentioning

confidence: 99%

Effect of Soil Texture on Water Movement of Porous Ceramic Emitters: A Simulation Study

Cai

Zhao

et al. 2018

Water

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“…However, pitchers do not retain salinity, and with saline water pitcher, irrigation may create irregular accumulation of salts in the soil. In field tests, solutes spread downwards, upwards and sideways from the pitcher due to capillarity and surface evaporation, and salts accumulate near the surface of the soil and on the outer sides of the soil mass that has been wetted by the pitcher (Keikha and Fatemehkarandish, 2015;Naik et al, 2008: Siyal et al, 2007Alemi, 1980). Siyal et al (2007) suggested remediating this by a heavy dose of flood irrigation at the end of crop production, but in the long run this technique may not prevent soil salinization in areas of high evapotranspiration, and it also uses large amounts of scarce water.…”

Section: Use Of Conventional Irrigation With Saline or Brackish Watermentioning

confidence: 99%

A low-cost integrated desalination and irrigation technique tested on dual-purpose sorghum in Turkana County, Kenya

Kaburu¹,

Mignard²,

Kemboi³

et al. 2021

J. Dryland Agric.

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In arid and semi-arid lands, water salinity often restricts plant growth, degrades soils, and even causes irrigation systems to fail, especially in hot climates. Worldwide, it is a major cause of the irrigationinduced salinization that had already affected 76 million ha of soil in 1991. Our novel and inexpensive irrigation technique addresses these issues, thus potentially improving the food security of affected farmers and pastoralists who often are amongst the world's poorest. Saline or brackish water is dispensed inside plastic bottles that are modified so as to feed only vapour to the soil, where roots and moisture-retaining materials can capture it. We tested this method in the field in Turkana County (Kenya) with Dual-Purpose Sorghum. Five treatments in five replicates were applied with different moisture-retaining materials: biochar; organic mulch; plastic sheeting; Super Absorbent Polymer); and none (Control). Effectiveness of the treatment was appraised by comparing the average heights of plants. At 64 cm after 30 days, the Super Absorbent Polymer treatment performed best (34% better than the control, p=0.05), followed by organic mulch (18% better than the control, p=0.05). Super Absorbent Polymer and organic mulch also retained the most moisture in the soil (37 and 32% better than the control, respectively; p=0.05).

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“…After a specific time, the reservoir was filled with the same water up to the same level to replenish the water loss. The percentage of water release per unit of time was calculated by Equation 2 (Naik et al, 2008):…”

Section: Determination Of Water Depletion From the Clay Reservoirsmentioning

confidence: 99%

Evaluation of the efficiency of irrigation methods on the growth and survival of tree seedlings in an arid climate

et al. 2020

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Scarce and scattered precipitation in arid regions is detrimental for newly planted seedlings. It is essential to provide required water storage for seedlings in restoration projects in the first year of their establishment. The subsurface irrigation can be much more effective than the surface irrigation because of the regulation of water availability and reduction in water evaporation. We studied the effect of surface and subsurface irrigation methods on the growth and survival of four common tree species including heaven tree (Ailanthus altissima (Mill.) Swingle), China berry (Melia azedarach L.), white mulberry (Morus alba L.), and black locust (Robinia pseudoacacia L.) by installing underground clay reservoirs with different permeabilities in Isfahan City, Iran. Different amounts of animal manure and wheat straw were mixed with clay fraction and cooked in a pottery kiln at 900°C to produce reservoirs with different permeabilities. The experimental treatments consisting of irrigation and tree species were considered with a factorial arrangement in a completely randomized design with three replications in 2016 and 2017. Leaf water potential of seedlings, which is indirectly related to drought resistance, was measured by a portable pressure chamber. The results showed that saplings height, basal diameter, number of leaves, chlorophyll content and stomatal conductance were significantly (P<0.05) higher in the subsurface irrigation with low permeability than in the surface irrigation, but the number of branches of the studied species were not significantly (P>0.05) affected by the irrigation methods and different permeabilities of clay reservoirs. The clay reservoirs with low and medium permeabilities constantly provide better conditions for plant growth, and water with lower pressure and longer time intervals to the plant roots as compared with the reservoirs with high permeability. Analysis of variance of the data showed that year and interaction between year and permeability of reservoir had significant effects (P<0.05) on all growth parameters, except for the chlorophyll content. In addition, the highest percentage of survival was 100% associated with the subsurface irrigation and the control treatment had the lowest survival percentages of 60%, 70%, 80% and 100% for M. alba, M. azedarach, A. altissima and R. pseudoacacia, respectively. Finally, the values of leaf water potential showed that R. pseudoacacia was the most drought resistant species.

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Hydraulics and salinity profile of pitcher irrigation in saline water condition

Cited by 13 publications

References 4 publications

Effect of Soil Texture on Water Movement of Porous Ceramic Emitters: A Simulation Study

Effect of Soil Texture on Water Movement of Porous Ceramic Emitters: A Simulation Study

A low-cost integrated desalination and irrigation technique tested on dual-purpose sorghum in Turkana County, Kenya

Evaluation of the efficiency of irrigation methods on the growth and survival of tree seedlings in an arid climate

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